This text-book along with its companion volume II is designed to cover the entire syllabi of thesubject of Thermal Engineering, which is inherent in the study of engineering students.The entire matter of the book is most comprehensive and presented in lucid language, withnumber of solved examples, neatly drawn sketches, so that the reader can understand the fundamentalsof the subject easily. Number of exercises are given at end of appropriate sectionsas well as at the end of chapters. Exercises, subjective questions, objective type multiple choicequestions are also included at the end of chapters.The book has Sixteen chapters. The key feature of the book are:Chapter 1 and 2 deals with Applied ThermodynamicsChapter 3 deals with Steam and Steam CyclesChapter 4 to 6 contains BoilersChapter 7 and 8 deals with Fuel and DraughtChapter 9 consist of the study of Steam Engine and TestingChapter 10 and 11 deals with Steam Nozzle and TurbineChapter 12 discussing topic on CondenserChapter 13 and 14 contains topics on I. C. Engines Theory and TestingChapter 15 Gas TurbineChapter 16 Air Pollution and Control.The book within its 928 pages it comprise the following* 546 Self-illustrative neatly drawn sketches* 43 Useful tables* 293 Solved Examples* 500 Objective Type Multiple Choice Questions* 905 Exercises and Subjective QuestionsIt is hoped that this book will satisfy the need of the Mechanical Engineering students preparingfor the B.Tech/B.E. examinations of almost all the Indian Universities, Diploma examinationsconducted by various Boards of Technical Education, Certificate courses as well as for theA.M.I.E., U.P.S.C., G.A.T.E. and other similar competitive and professional Examinations.It should also be of an immense help to the practising Engineers.